Drilling Characteristics of Plastic Materials with Adaptive Control of Feed Rate

• DOI: 10.4028/p-ehufl9
• Publication Date: 2025-03-26T10:40:32Z
• Authors: Masato Okada; Takumi Iwahara; Naoto Kaneda; Hideyuki Uematsu; Makoto Nikawa

Adaptive feed-rate controlled (AFC) drilling has been proposed as a high-quality and highly efficient method for thermoplastic resins. The feed rate of the drill tool is by load in thrust direction during AFC drilling. In early stages drilling, extremely low, followed sudden increase rate. Experimental investigations revealed that temperature near point had dominant effect on position at which transitioned from low to high. transition was approximately 150 °C PA6. Therefore, accelerated spindle speed increased, significantly affected cutting temperature. After higher speed, progressed constant Additionally, drilled hole generally regardless depth. One applications expected be superior different stacked materials. effectiveness examined compared with general constant-feed material PA6 carbon-fiber-reinforced thermoplastics. When efficiency aligned, maximum force suppressed less than 50% Furthermore, finished inner surface better after